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US 4,308,402 AGranted
Process for methyl-capped alkoxylates
AssigneeShell Oil Company
InventorsCharles L. Edwards, Andrea Sanders, Lynn H. Slaugh
Life of this patent
Estimating the term…
Abstract
A terminal --CH.sub.2 OH moiety is selectively cleaved from an alkoxyalkanol at elevated temperatures, in the optional presence of water, over a catalytically effective amount of heterogeneous nickel.
Claims11
In a process for cleaving a terminal --CH.sub.2 OH moiety from alkoxyalkanols which comprises reacting an alkoxyalkanol of the formula:
- RO(CH.sub.2 CHR'O).sub.n CH.sub.2 CH.sub.2 OH
- wherein n is an integer from 1 to 12, R is an alkyl group and R' is hydrogen or methyl with the proviso that when n is an integer of greater than 1, R' may represent mixtures of hydrogen and methyl, at a temperature of from about 150.degree. to about 270.degree. C. in the presence of a catalytically effective amount of a nickel-containing compound deposited on an inert refractory support, thereby affording a methyl-capped alkoxylate of the formula:
- RO(CH.sub.2 CHR'O).sub.n CH.sub.3
- wherein n, R and R' have the same meanings as above, the improvement which comprises reacting an alkoxyalkanol in which the alkyl group R has 9 to 22 carbon atoms, in the presence of a catalytically effective amount of a reduced nickel-containing compound deposited on an inert refractory support having a surface area of from 9 to 160 square meters per gram.
1 more element
In a process for cleaving a terminal --CH.sub.2 OH moiety from alkoxyalkanols which comprises reacting an alkoxyalkanol of the formula:
- RO(CH.sub.2 CHR'O).sub.n CH.sub.2 CH.sub.2 OH
- wherein N is an integer from 1 to 12, R is an alkyl group and R' is hydrogen or methyl with the proviso that when n is an integer of greater than 1, R' may represent mixtures of hydrogen and methyl, at a temperature of from about 150.degree. to about 270.degree. C., in the presence of a catalytically effective amount of a nickel-containing compound deposited on an inert refractory support, thereby affording a methyl-capped alkoxylate of the formula:
- RO(CH.sub.2 CHR'O).sub.n CH.sub.3
- wherein n, R and R' have the same meanings as above, the improvement which comprises reacting an alkoxyalkanol in which the alkyl group R has 9 to 22 carbon atoms, in the presence of up to about 50% water by volume in the reactant feed and in the presence of a catalytically effective amount of a reduced nickel-containing compound deposed on an inert refractory support having a surface area of from 9 to 160 square meters per gram.
1 more element
Dependencies are inferred from the claim text.